Epson ES-300C Product Support Bulletin(s) - Page 6

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EPSON AMERICA, INC. EPSON Product Support Bulletin Subject: Image Editing Terms Date: 6/5/91 Page(s): 1 of 3 PSB No: P-0078 Originator: RS The following terms' are used to describe image editing and grayscale in connection with scanners, monitors and printers. Additive Primary Colors: The colors produced by mixing colored light. The primary additive colors are red, green and blue. The absence of color produces black (0%); maximum intensity produces white (100%). This principle is used in color monitors (RGB). By using 24 bits per pixel it is possible to represent more than 16 million colors. Aliasing: The jagged diagonal lines that appear in low resolution mode. Usually noticeable on characters like 'A" and "W". Antialiasing : The removal of the aliasing or step-like diagonal lines. Brightness: The balance of light and dark shades. Continuous Tone: The transition from light to dark or dark to light in a smooth uninterrupted progression. Laser and dot matrix printers do not support continuous tones. Contrast: The range between the darkest and lightest shades of an image. As contrast increases, the number of gray shades between black and white decreases. Cropping: An operation that allows portions of an image to be selected. Usually pertains to scanning technology. Dithering: A method of shading that uses black dots of varying density to represent darker areas. This technology is used in devices that only support black and white outputs. DPI: Abbreviation for dot per inch. The standard measurement of resolution for all output devices. DPI describes the number of pixels in an image. 'Some terms taken from PC Publishing, Jan. 1990.

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EPSON AMERICA, INC.
EPSON
Product Support Bulletin
Subject: Image Editing Terms
Date: 6/5/91
Page(s): 1 of 3
PSB No: P-0078
Originator: RS
The following terms’ are used to describe image editing and grayscale in
connection with scanners, monitors and printers.
Additive
Primary Colors:
Aliasing:
Antialiasing :
Brightness:
Continuous
Tone:
Contrast:
Cropping:
Dithering:
DPI:
The colors produced by mixing colored light. The primary
additive colors are red, green and blue. The absence of color
produces black (0%); maximum intensity produces white (100%).
This principle is used in color monitors (RGB). By using 24 bits
per pixel it is possible to represent more than 16 million colors.
The jagged diagonal lines that appear in low resolution mode.
Usually noticeable on characters like ‘A” and "W".
The removal of the aliasing or step-like diagonal lines.
The balance of light and dark shades.
The transition from light to dark or dark to light in a smooth
uninterrupted progression. Laser and dot matrix printers do not
support continuous tones.
The range between the darkest and lightest shades of an image.
As contrast increases, the number of gray shades between black
and white decreases.
An operation that allows portions of an image to be selected.
Usually pertains to scanning technology.
A method of shading that uses black dots of varying density to
represent darker areas. This technology is used in devices that
only support black and white outputs.
Abbreviation for dot per inch. The standard measurement of
resolution for all output devices. DPI describes the number of
pixels in an image.
‘Some terms taken from PC Publishing, Jan. 1990.